2001

7.8

2000

3.0

1976

7.4

1980

7.0

1992

0.0

1999

7.1

2004

5.1

2012

5.5

1998

6.9

1991

5.3

1992

6.0

1994

6.7

1986

6.0

1988

0.0

0.0

2007

5.1

1994

6.0

1996

2.8

1994

0.0